A polymer hardness testing device

Abstract

The present invention discloses a polymer hardness testing device, including a body, a hardness meter and a pressure-bearing platform that can be lifted and lowered on the body, and also including a test chamber, a feeding mechanism, a water absorption component, a discharging mechanism and a temperature control mechanism. The test chamber is fixedly connected to the body, the hardness meter and the pressure-bearing platform are both located inside the test chamber, the feeding mechanism is used to transport the test piece to the inside of the test chamber, the water absorption component is arranged inside the feeding box, and is used to absorb the moisture on the surface of the test piece, the discharging mechanism is used to collect the test piece after the test, the temperature control mechanism is used to control the temperature in the test chamber, the temperature control mechanism includes a temperature controller, a fan and a connecting pipe, the temperature controller is fixedly installed inside the test chamber, the fan is installed inside the test chamber, and the test chamber is connected to the feeding mechanism and the discharging mechanism through the connecting pipe. The present invention solves the problem that the external temperature and humidity changes in the prior art affect the test results.

Description

Technical Field

[0001] The invention relates to the field of testing technology, and in particular to a polymer hardness testing device. Background Art

[0002] Polymer refers to a high molecular weight compound formed by repeated bond connection. According to the properties and uses of the materials, polymers can be divided into plastics, rubbers and fibers. The so-called hardness is the ability of a material to resist a harder object pressing into its surface. According to different test methods and applicable ranges, hardness units can be divided into Brinell hardness, Vickers hardness, Rockwell hardness, micro-Vickers hardness and Shore hardness, etc. Different units have different test methods and are suitable for materials or occasions with different characteristics.

[0003] The hardness test of polymers is one of the important indicators for testing material properties, and it is also one of the fastest and most economical test methods. The reason why it has become a common method for mechanical property testing is that the hardness test can reflect the differences in the chemical composition, organizational structure and processing technology of the material, and is often used as a means of supervision in various industries. At present, the main test method for the hardness test of polymers is the Shore hardness test method, which usually presses the indenter into the surface of the sample. After a specified holding time, the test force is removed, the indentation data under the test force is measured, and then the hardness of the sample is calculated, or the hardness value is directly displayed on the display screen of the hardness instrument. The hardness of polymers is greatly affected by temperature and humidity. The hardness test is in a relatively open environment. When the seasons or temperature change, there are certain differences in the tested hardness. When the humidity is high, the sample surface is slippery, which will also affect the test results. Therefore, we propose a polymer hardness testing device that can reduce the impact of external temperature and humidity on the hardness test results. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a polymer hardness testing device to solve the problem in the prior art mentioned in the background technology that changes in external temperature and humidity affect the test results.

[0005] To achieve the above object, the present invention provides the following technical solution: a polymer hardness testing device, comprising a body, a hardness tester and a pressure-bearing platform which can be lifted and lowered on the body, and further comprising:

[0006] A testing chamber, wherein the testing chamber is fixedly connected to the machine body, and the hardness tester and the pressure platform are both located inside the testing chamber;

[0007] A feeding mechanism, the feeding mechanism is used to transport the test piece into the interior of the test chamber, the feeding mechanism comprises:

[0008] A feed box, the feed box is fixedly connected to one side of the test bin, the feed box is connected to the test bin through a feed port, a discharge port is provided on the feed box, and a cover plate is rotatably connected to the discharge port;

[0009] Roller 1, a plurality of rollers are provided, and the roller 1 is rotatably connected to the inside of the feed box;

[0010] A push plate, which is movably disposed inside the feed box and is used to push the test piece into the test chamber;

[0011] A water absorption component, which is arranged inside the feeding mechanism and is used to absorb moisture on the surface of the specimen. The water absorption component includes:

[0012] A water-absorbing pad, the water-absorbing pad is fixedly sleeved on the outside of the rotating roller 1;

[0013] A pressing plate, which is arranged inside the feed box through a pressing spring and a telescopic rod;

[0014] A water-absorbing sponge, the water-absorbing sponge is fixedly connected to the bottom of the pressing plate, and the water-absorbing sponge is in contact with the water-absorbing pad;

[0015] A discharging mechanism, which is used to collect the tested specimens, and comprises:

[0016] A discharge box, the discharge box includes a side connected to the test bin away from the feeding mechanism, the discharge box is connected to the test bin through a discharge port, a material taking port is provided on the discharge box, and a cover plate is rotatably connected to the material taking port;

[0017] A second rotating roller, wherein a plurality of the second rotating rollers are provided and the second rotating rollers are rotatably connected to the inside of the discharge box;

[0018] A movable plate, the movable plate being movably disposed inside the testing chamber;

[0019] A pushing frame, which can be lifted and lowered on the movable plate and is used to push the tested specimen into the discharge box;

[0020] A temperature control mechanism, which is used to control the temperature in the test chamber, and includes:

[0021] A temperature controller, the temperature controller is fixedly installed inside the test chamber;

[0022] A fan, the fan being installed inside the test chamber;

[0023] A connecting pipe, through which the test chamber is connected to the feeding mechanism and the discharging mechanism.

[0024] In order to clean the surface of the pressure platform, a cleaning component is also included, and the cleaning component is arranged on the movable plate, and the cleaning component includes:

[0025] A moving block, the moving block is movably arranged on the moving plate;

[0026] A cleaning plate, the cleaning plate being rotatably disposed at the bottom of the moving block;

[0027] A brush is fixedly connected below the cleaning plate.

[0028] In order to ensure the water absorption of the water absorption component, a scraper is fixedly connected to the push plate, and the scraper is in contact with the water absorption pad and the water absorption sponge. A drain port is opened on the feed box, and a water absorption bin is sealed and slidably installed inside the drain port. The water absorption bin is a top-opening structure, and a desiccant is placed inside the water absorption bin.

[0029] In order to reduce the temperature change of the test bin during feeding and discharging, baffles are rotatably connected to the feeding port and the discharging port, the baffles rotate in the moving direction of the specimen, and a counterweight is fixedly connected to the bottom of the baffles.

[0030] In order to improve the cleaning effect of the pressure platform, the fan can be rotatably installed on the moving block, and the fan is located on a side of the moving block away from the pushing frame.

[0031] Compared with the prior art, the present invention provides a polymer hardness testing device, which has the following beneficial effects:

[0032] 1. In the present invention, the test position is sealed by the test chamber to reduce the influence of the external temperature and humidity on the test environment during the test. At the same time, the temperature in the test chamber is controlled by a temperature controller, and the air flow in the test chamber is accelerated by a fan, thereby improving the temperature control effect. A certain buffer is provided for the test piece during feeding and discharging by the feed box and the discharge box, so that the test piece first enters the feed box and the discharge box, and then enters the test chamber for testing, or the test piece is taken out for measurement, further reducing the contact of the test chamber with the external environment during feeding and discharging. At the same time, the constant temperature air in the test chamber is sent into the feed box and the discharge box through a connecting pipe to maintain the temperature stability of the feed box and the discharge box, thereby further ensuring the temperature stability in the measurement chamber.

[0033] 2. In the present invention, the push plate pushes the test piece in the feed box into the interior of the test chamber. During the movement of the test piece, the absorbent pad absorbs the water at the bottom of the test piece, and the absorbent sponge is pressed against the bottom of the test piece under the action of the compression spring to absorb the water on the top of the test piece. At the same time, the scraper moves with the push plate to squeeze the absorbent pad and the absorbent sponge. At the same time, the scraper pushes the absorbent pad and the roller to rotate to maintain the water absorption effect of the absorbent pad and the absorbent sponge. At the same time, the squeezed water is absorbed by the desiccant to ensure the dryness of the feed box, thereby making the surface of the test piece dry and reducing the slipping phenomenon in the test.

[0034] 3. In the present invention, the moving plate drives the pushing frame to move, so that the tested specimen can be pushed from the test chamber to the inside of the discharge box. At the same time, the moving block drives the rotating cleaning plate and the brush to move along the direction of the moving plate to clean the pressure platform. At the same time, the fan blows the pressure platform to ensure the cleanliness of the pressure platform, thereby ensuring the flatness of subsequent specimens and further improving the accuracy of the test.

[0035] 4. Therefore, compared with the hardness testing equipment in the prior art, the present invention separates the test position from the outside world through the test bin, and keeps the test bin in a closed state during feeding and unloading through the feed box, the discharge box and the baffle. The temperature in the test bin is controlled by the temperature controller and the fan to keep it within a certain range. At the same time, the temperature in the feed box and the discharge box is regulated by the connecting pipe to further reduce the temperature change of the test bin during feeding and unloading. The test piece is pushed to the test position by the push plate, and the absorbent sponge and the absorbent pad absorb the moisture on the surface of the test piece to keep the test piece dry during testing. The scraper squeezes out the excess moisture inside the absorbent sponge and the absorbent pad, and the squeezed moisture is absorbed by the desiccant to maintain the dry environment in the feed box. The moving plate drives the pushing frame to push the tested test piece into the inside of the discharge box, and the moving plate and the moving block drive the rotating brush to move on the pressure platform to clean the pressure platform. The fan moves with the moving block to blow the pressure platform to ensure the flatness of the test piece during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of a partial cross-section of this application;

[0037] Figure 2 A schematic diagram of the structure of the first perspective of the entire application;

[0038] Figure 3 A schematic diagram of the structure of the second perspective of the entire application;

[0039] Figure 4 This is a schematic diagram of the structure of the feeding mechanism and the water absorption component of this application;

[0040] Figure 5This is a schematic diagram of the structure of the discharge box, the second roller, the baffle and the counterweight block of this application;

[0041] Figure 6 This is a schematic diagram of the structure of the screw feed mechanism, the push frame, the fan and the cleaning component of this application;

[0042] Figure 7 A schematic diagram of the structure of the moving plate, the pushing frame, the fan and the cleaning assembly for this application;

[0043] Figure 8 A schematic diagram of the structure of the fan and cleaning components for this application;

[0044] Fig. 9 For this application Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0045] Fig.10 For this application Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0046] In the figure:

[0047] 1. Machine body; 2. Hardness tester; 3. Pressure platform; 4. Test chamber; 5. Support plate; 6. Baffle plate; 7. Counterweight block; 8. Motor 2; 9. Mounting frame; 10. Scraper; 11. Water absorption chamber;

[0048] 101, feed box; 102, roller 1; 103, push plate; 104, cover plate; 105, electric cylinder 1;

[0049] 201, water-absorbing pad; 202, pressing plate; 203, water-absorbing sponge;

[0050] 301, discharge box; 302, rotating roller 2; 303, moving plate; 304, pushing frame; 305, screw feed mechanism 1; 306, electric cylinder 2;

[0051] 401, temperature controller; 402, fan; 403, connecting pipe;

[0052] 501, moving block; 502, cleaning plate; 503, brush; 504, screw feed mechanism 2; 505, motor 1. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figures 1 to 10 A polymer hardness testing device comprises a body 1, a hardness tester 2 and a pressure platform 3 which can be lifted and lowered on the body 1. The pressure platform 3 can be driven to rise by rotating a handle to control the pressure of the hardness tester 2 on the test piece. The hardness value is directly displayed by the hardness tester 2. This is the function of the existing hardness tester itself and is a prior art known to those skilled in the art. It will not be described in detail here. The device also comprises a test chamber 4, a feeding mechanism, a water absorption component, a discharging mechanism and a temperature control mechanism. Compared with the hardness testing device in the prior art, the present invention separates the test position from the outside world through the test chamber 4, and keeps the test chamber 4 in a closed state during feeding and discharging through the feeding box 101, the discharging box 301 and the baffle 6. The temperature in the test chamber 4 is controlled by the temperature controller 401 and the fan 402 to keep it within a certain range. At the same time, the connecting pipe 403 is used to control the temperature in the test chamber 4. The temperature in the feed box 101 and the discharge box 301 is regulated to further reduce the temperature change of the test chamber 4 during feeding and discharging. The push plate 103 is used to push the test piece to the test position. The absorbent sponge 203 and the absorbent pad 201 absorb the moisture on the surface of the test piece to keep the test piece dry during testing. The scraper 10 is used to squeeze out the excess moisture inside the absorbent sponge 203 and the absorbent pad 201, and the squeezed moisture is absorbed by the desiccant to maintain the dry environment in the feed box 101. The moving plate 303 drives the pushing frame 304 to push the tested test piece into the discharge box 301. At the same time, the moving plate 303 and the moving block 501 drive the rotating brush 503 to move on the pressure platform 3 to clean the pressure platform 3. The fan 402 moves with the moving block 501 to blow the pressure platform 3 to ensure the flatness of the test piece during testing.

[0055] The test chamber 4 is fixedly connected to the machine body 1, and the hardness tester 2 and the pressure platform 3 are both located inside the test chamber 4. The test piece is placed on the pressure platform 3, and the pressure platform 3 can be controlled to rise by an electric cylinder or a rotating handle to drive the test piece and the hardness tester 2 to contact, and the hardness value is displayed on the display screen on the machine body 1. The test chamber 4 is made of a transparent material such as a transparent plastic plate, and the test situation can be observed. At the same time, an operation port is opened on the front side of the test chamber 4, and an opening and closing plate is provided at the operation port, so that the internal test piece can be placed or other operations can be performed when necessary. The test chamber 4 closes the test position to reduce the impact of the external ambient temperature on the test environment. A support plate 5 is provided inside the test chamber 4, and the support plate 5 and the pressure platform 3 are at the same height when they are in the non-test position, that is, the lowest position, and a lifting port for the pressure platform 3 to be raised and lowered is opened on the support plate 5.

[0056] It should be noted that the hardness tester 2 can be detachably mounted on the body 1. The hardness tester 2 can select Shore hardness A, Shore hardness C, Shore hardness D, and Shore hardness F, which correspond to the hardness tests of rubber, microporous materials, plastics, and sponges respectively. Different hardness testers 2 can be replaced according to different materials to meet different test requirements. The Shore hardness tester measures the hardness of the material by the indentation method. Specifically, a certain size of indentation needle is pressed into the material to be tested with a spring of specified stiffness, and the hardness of the material is determined according to the depth of the indentation needle. The Shore hardness measures the elastic hardness of the polymer. The Shore hardness tester is divided into type A, type C, and type D. , which are suitable for different types of materials: Type A is suitable for general rubber, synthetic rubber, soft rubber, polyol, leather, etc.; Type C is suitable for microporous materials made of rubber and plastic, and plastics containing foaming agents; Type D is suitable for general hard rubber, resin, acrylic, glass, thermoplastic rubber, printing plates, fibers, etc. The unit of Shore hardness is "degree", and its description method is divided into A and D, representing different hardness ranges. The range of Shore A hardness meter is 0-100HA, which is suitable for measuring materials below 90 degrees. The range of Shore D hardness meter is 0-100HD, which is suitable for measuring materials of 90 degrees and above.

[0057] The feeding mechanism is used to transport the test piece into the test chamber 4. The feeding mechanism includes a feeding box 101, a roller 102 and a push plate 103. The feeding box 101 is fixedly connected to one side of the test chamber 4. The feeding box 101 is connected to the test chamber 4 through a feeding port. A discharge port is provided on the feeding box 101. A cover plate 104 is rotatably connected to the discharge port. A plurality of rollers 102 are provided. The rollers 102 are rotatably connected to the inside of the feeding box 101. The push plate 103 is movably arranged in the inside of the feeding box 101 to transport the test piece. The specimen is pushed into the test chamber 4, an electric cylinder 105 is installed on the feed box 101, and the push plate 103 is fixedly connected to the output end of the electric cylinder 105. The cover plate 104 is opened to put the specimen to be tested into the feed box 101, and the push plate 103 is driven by the electric cylinder 105 to push the specimen to move into the test chamber 4. The transportation of the specimen is assisted by the rotation of the roller 102 to reduce the resistance to the movement of the specimen. The cover plate 104 closes the feed box 101 to reduce the influence of the external ambient temperature on the inside of the feed box 101.

[0058] The water absorption component is arranged inside the feeding mechanism, and is used for absorbing moisture on the surface of the specimen. The water absorption component includes a water absorption pad 201, a pressure plate 202 and a water absorption sponge 203. The water absorption pad 201 is fixedly mounted on the outside of the rotating roller 102, and the pressure plate 202 is arranged inside the feeding box 101 through a compression spring and a telescopic rod. The water absorption sponge 203 is fixedly connected to the bottom of the pressure plate 202, and the water absorption sponge 203 is in contact with the water absorption pad 201. When the push plate 103 pushes the specimen to move, the water absorption pad 201 wipes the bottom of the specimen. When the specimen moves under the water absorption sponge 203, the specimen is pressed between the water absorption sponge 203 and the water absorption pad 201 under the action of the compression spring, so as to further improve the drying effect of the specimen. The water absorption sponge 203 wipes the top of the specimen, and the dried specimen enters the interior of the test chamber 4 for hardness testing to prevent the hardness meter 2 from slipping on the surface of the specimen.

[0059] The discharging mechanism is used to collect the tested specimens. The discharging mechanism includes a discharging box 301, a second roller 302, a movable plate 303 and a pushing frame 304. The discharging box 301 includes a side connected to the test bin 4 away from the feeding mechanism. The discharging box 301 is connected to the test bin 4 through the discharging port. A material taking port is provided on the discharging box 301, and a cover plate 104 is rotatably connected to the material taking port. A plurality of second rollers 302 are provided, and the second rollers 302 are rotatably connected to the inside of the discharging box 301. The movable plate 303 is movably arranged in the inside of the test bin 4. A lead screw feeding mechanism 305 is installed in the inside of the test bin 4 for driving the movable plate 303 to move along the direction of the connection between the feeding box 101 and the discharging box 301. The pushing frame 304 can be lifted and arranged on the movable plate 303 for pushing the tested specimen into the inside of the discharging box 301. An electric cylinder 2 306 is installed on the movable plate 303, and the pushing frame 304 is arranged on the electric cylinder 2 At the output end of 306, the movable plate 303 can be driven to reciprocate inside the test chamber 4 through the screw feeding mechanism 1 305. After the test is completed, the pressure platform 3 drops to a position flush with the supporting plate 5, and the movable plate 303 moves to the side of the pressure platform 3 away from the discharge box 301. The pushing frame 304 is in a position away from the pressure platform 3. The electric cylinder 2 306 drives the pushing frame 304 to drop to contact with the top of the pressure platform 3, and the screw feeding mechanism 1 305 drives the movable plate 303 to move toward the discharge box 301, and drives the pushing frame 304 to push the tested specimen into the discharge box 301. The cover plate 104 on the discharge box 301 can be opened to take out the tested specimen, and the indentation can be further measured to verify the hardness value and improve the accuracy of the hardness test. The pushing frame 304 can push the specimen to move in a small range, so that the specimen is offset by a certain distance, and hardness tests are performed on different positions of the specimen to ensure the accuracy of the test.

[0060] The temperature control mechanism is used to control the temperature in the test chamber 4. The temperature control mechanism includes a temperature controller 401, a fan 402 and a connecting pipe 403. The temperature controller 401 is fixedly installed inside the test chamber 4. The fan 402 is installed inside the test chamber 4. The test chamber 4 is connected to the feeding mechanism and the discharging mechanism through the connecting pipe 403. The temperature controller 401 is a prior art known to those skilled in the art. The temperature is preset and can control the test chamber 4 to maintain a certain temperature, thereby ensuring that the temperature of the test piece is constant during the test, thereby reducing the test value changes caused by temperature changes, and improving the accuracy and stability of the test. Improve the flow of constant temperature air in the test bin 4, thereby improving the speed of temperature control, and blow constant temperature air into the interior of the feed box 101 and the discharge box 301 through the connecting pipe 403, so that the feed box 101 and the discharge box 301 are maintained at a constant temperature, thereby reducing the temperature change in the test bin 4 during feeding and discharging. A one-way valve is provided on the connecting pipe 403, so that air flows from the test bin 4 into the feed box 101 and the discharge box 301. When taking and discharging materials, the external ambient temperature causes temperature changes in the feed box 101 and the discharge box 301, thereby reducing the temperature changes in the feed box 101 and the discharge box 301 on the temperature in the test bin 4.

[0061] In order to reduce the temperature change of the test bin 4 during feeding and discharging, baffles 6 are rotatably connected at the feed port and the discharge port, and the baffles 6 rotate in the direction of the specimen movement. The baffle 6 at the feed port is located inside the test bin 4, and the baffle 6 at the discharge port is located inside the discharge box 301. A counterweight 7 is fixedly connected to the bottom of the baffle 6. When the specimen enters the test bin 4 or the discharge box 301, the specimen pushes the baffle 6 to rotate. When no external force is applied, the baffle 6 is in a vertical downward state under the action of the counterweight 7, and the feed port or the discharge port is blocked, thereby reducing the heat exchange between the test bin 4 and the feed box 101 or the discharge box 301. The pushing frame 304 is L-shaped, and the specimen can be pushed into the discharge box 301 and kept at a certain distance from the discharge port, so as to avoid the specimen blocking the baffle 6 from rotating downward to a vertical position.

[0062] In order to clean the surface of the pressure platform 3, a cleaning component is also included, which is arranged on the movable plate 303. The cleaning component includes a movable block 501, a cleaning plate 502 and a brush 503. The movable block 501 is movably arranged on the movable plate 303. The movable plate 303 is provided with a screw feed mechanism 2 504 for driving the movable block 501 to move along the movable plate 303. The moving direction of the movable block 501 is perpendicular to the moving direction of the movable plate 303. The cleaning plate 502 is rotatably arranged at the bottom of the movable block 501. A motor 1 505 is installed at the bottom of the movable block 501. The cleaning plate 502 is fixedly connected to the output end of the motor 1 505. The brush 503 is fixedly connected to the cleaning plate 502, after the test is completed, the moving plate 303 drives the pushing frame 304 to push the test piece to move toward the discharge box 301, and at the same time drives the moving block 501 to move toward the discharge box 301, the screw feeding mechanism 2 504 drives the moving block 501 to move in a direction perpendicular to the moving direction of the moving plate 303, and at the same time the motor 1 505 drives the cleaning plate 502 and the brush 503 to rotate, the brush 503 cleans the surface of the pressure platform 3, and the debris and dust generated by the cleaning are swept to the bottom of the test chamber 4, and a cleaning port is provided at the bottom of the test chamber 4, and a cleaning plate 502 is detachably connected to the cleaning port, and the cleaning plate 502 is regularly removed to clean the internal impurities of the test chamber 4.

[0063] In order to improve the cleaning effect of the pressure platform 3, the fan 402 can be rotatably installed on the moving block 501. The fan 402 is located on the side of the moving block 501 away from the pushing frame 304. The moving block 501 is provided with a motor 28. The output end of the motor 28 is fixedly connected to the mounting frame 9. The fan 402 is installed on the mounting frame 9. The motor 28 can drive the mounting frame 9 and the fan 402 to rotate, and the blowing direction of the fan 402 is adjusted. During the test, the fan 402 is directed toward the temperature controller 401 to increase the flow rate of the constant temperature air. After the test is completed, the fan 402 is directed toward the pressure platform 3, and the moving block 501 drives the fan 402 to move to purge the pressure platform 3. The pressure platform 3 is first cleaned by the brush 503, and then the pressure platform 3 is blown by the fan 402, thereby improving the cleaning effect of the pressure platform 3.

[0064] In order to ensure the water absorption of the water absorption component, a scraper 10 is fixedly connected to the push plate 103, and the scraper 10 is in contact with the water absorption pad 201 and the water absorption sponge 203. A drainage port is provided on the feed box 101, and a water absorption bin 11 is installed in a sealing and sliding manner inside the drainage port. The water absorption bin 11 is a top-opening structure, and a desiccant is placed inside the water absorption bin 11. The electric cylinder 306 drives the scraper 10 and the push plate 103 to move, and at the same time, the scraper 10 squeezes the water absorption pad 201 and the water absorption sponge 203 while pushing the test piece into the test bin 4. 10 is pressed against the water absorbent pad 201, which can push the water absorbent pad 201 to rotate, so that different positions of the water absorbent pad 201 are in contact with the bottom of the test piece, and the water absorption effect of the water absorbent pad 201 is maintained. The water squeezed out by the scraper 10 falls on the bottom of the feed box 101, that is, falls into the inside of the water absorption bin 11, and is absorbed by the desiccant. At the same time, the desiccant absorbs the moisture in the air to keep the feed box 101 dry. The water absorption bin 11 is regularly removed from the inside of the feed box 101, and the desiccant inside it is replaced to ensure the drying effect of the feed box 101.

[0065] The working principle or use process of the polymer hardness testing device is as follows: first, the cover plate 104 is opened, and the test piece is placed in the feed box 101. The electric cylinder 105 drives the push plate 103 to move, and the test piece is pushed into the test chamber 4. During this process, the test piece is first moved under the absorbent sponge 203, and the absorbent sponge 203 and the absorbent pad 201 wipe the surface of the test piece, and the test piece is pushed onto the pressure platform 3;

[0066] The pressure-bearing platform 3 is driven by an electric cylinder or a rotating handle to drive the test piece to rise, and the hardness tester 2 applies a certain pressure to the test piece and maintains it for a certain period of time. The hardness of the test piece is displayed by the hardness tester 2, and then the pressure-bearing platform 3 drives the test piece to descend to its original position;

[0067] The lead screw feeding mechanism 1 305 drives the moving plate 303 to move to the side of the pressure platform 3 away from the discharge box 301, the moving block 501 is on the side of the moving plate 303, the brush 503 is at a position away from the test piece, the electric cylinder 2 306 drives the push frame 304 to descend, and the lead screw feeding mechanism 1 305 drives the moving plate 303 and the push frame 304 to move toward the discharge box 301, pushing the test piece into the discharge box 301;

[0068] During the discharging process, the screw feeding mechanism 2 504 drives the moving block 501 to move along the moving plate 303, and at the same time, the motor 1 505 drives the cleaning plate 502 and the brush 503 to rotate to clean the pressure platform 3, and the motor 2 8 drives the air outlet of the fan 402 to rotate in the direction toward the pressure platform 3, and the fan 402 moves with the brush 503 to purge the pressure platform 3;

[0069] The cover plate 104 is opened to take out the test piece in the discharge box 301 . During the test, the temperature controller 401 controls the temperature in the test chamber 4 , the feed box 101 and the discharge box 301 .

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polymer hardness testing device, comprising a body (1), a hardness tester (2) and a pressure platform (3) mounted on the body (1) in a liftable manner, characterized in that: It also comprises a test chamber (4), a feeding mechanism, a water absorption component, a discharging mechanism and a temperature control mechanism, wherein the test chamber (4) is fixedly connected to the machine body (1), and the hardness tester (2) and the pressure platform (3) are both located inside the test chamber (4); Wherein, the feeding mechanism is used to transport the test piece into the interior of the test chamber (4); Wherein, the water absorption component is arranged inside the feeding mechanism and is used to absorb the water on the surface of the specimen; Wherein, the discharging mechanism is used to collect the test pieces after the test; The temperature control mechanism is used to control the temperature in the test chamber (4), and the temperature control mechanism comprises: A temperature controller (401), the temperature controller (401) being fixedly installed inside the test chamber (4); A fan (402), the fan (402) being installed inside the test chamber (4); A connecting pipe (403), wherein the test chamber (4) is connected to the feeding mechanism and the discharging mechanism via the connecting pipe (403); The feeding mechanism comprises: A feed box (101), the feed box (101) being fixedly connected to one side of the test bin (4), the feed box (101) being connected to the test bin (4) via a feed port, a discharge port being provided on the feed box (101), and a cover plate (104) being rotatably connected to the discharge port; The discharging mechanism comprises: A discharge box (301), the discharge box (301) comprising a side connected to the test bin (4) away from the feeding mechanism, the discharge box (301) being connected to the test bin (4) via a discharge port, a material taking port being provided on the discharge box (301), and a cover plate (104) being rotatably connected to the material taking port; A second rotating roller (302), wherein a plurality of the second rotating rollers (302) are provided, and the second rotating rollers (302) are rotatably connected to the inside of the discharge box (301); A movable plate (303), the movable plate (303) being movably arranged inside the testing chamber (4); A pushing frame (304), the pushing frame (304) being movably disposed on the movable plate (303) and being used to push the test piece after the test into the inside of the discharge box (301); A cleaning component, the cleaning component is arranged on the movable plate (303), and the cleaning component comprises: A moving block (501), the moving block (501) being movably arranged on the moving plate (303); A cleaning plate (502), the cleaning plate (502) being rotatably disposed at the bottom of the moving block (501); A brush (503), the brush (503) being fixedly connected below the cleaning plate (502); The fan (402) is rotatably mounted on the moving block (501). The fan (402) is located on a side of the moving block (501) away from the pushing frame (304). During the test, the fan (402) is directed toward the temperature controller (401) to increase the flow speed of the constant temperature air. After the test is completed, the fan (402) is directed toward the pressure platform (3).

2. A polymer hardness testing device according to claim 1, characterized in that: The feeding mechanism also includes: Roller 1 (102), a plurality of rollers 1 (102) are provided, and the rollers 1 (102) are rotatably connected to the inside of the feed box (101); A push plate (103), the push plate (103) being movably arranged inside the feed box (101) and used for pushing the test piece into the test chamber (4).

3. A polymer hardness testing device according to claim 2, characterized in that: The water absorbing component comprises: A water-absorbing pad (201), the water-absorbing pad (201) being fixedly sleeved on the outside of the first rotating roller (102); A pressing plate (202), the pressing plate (202) being arranged inside the feed box (101) via a pressing spring and a telescopic rod; A water-absorbing sponge (203), wherein the water-absorbing sponge (203) is fixedly connected to the bottom of the pressing plate (202), and the water-absorbing sponge (203) is in contact with the water-absorbing pad (201).

4. A polymer hardness testing device according to claim 3, characterized in that: The push plate (103) is fixedly connected to a scraper (10), the scraper (10) is in contact with the water absorbent pad (201) and the water absorbent sponge (203), the feed box (101) is provided with a drain port, a water absorbent bin (11) is sealingly and slidably mounted inside the drain port, the water absorbent bin (11) is a top-opening structure, and a desiccant is contained inside the water absorbent bin (11).

5. A polymer hardness testing device according to claim 4, characterized in that: The feed port and the discharge port are both rotatably connected to a baffle (6), the baffle (6) rotates in the direction of specimen movement, and a counterweight (7) is fixedly connected to the bottom of the baffle (6).

Images